Grain-scourer.



Patented Feb. 2a, |9o|.-

No. 668,360. c. s. maxim 4 GRAIN snowman. j (Application filed May 27, 1899.1 (no unam 2 sheefs-sheef l.

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' No. 668,360. Patanted FabQzs, 190|.

c. s. RIDER. GRAIN SCOURER.

(Application filed May 27, 1899.)

(No Model.)

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llivrrnn STATES PATENT OFFICE.

CHARLES S. RIDER, OF SILVER CREEK, NEW YORK, ASSIGNOR TO THE S. HOWES COMPANY, OF SAME PLACE.

GRAIN-SCOURER.

SPECIFCATION forming part of Letters Patent No. 668,860, dated February 26, 1901. Application filed May 27, 1899. Serial No. 718.523. (No model.)

To CLN, whom, t may concern;

Be it known that I, CHARLES S. RIDER, a citizen of the United States, residing at Silver Creek, in the county of Chautauqua and State of New York, have invented new and useful Improvements in Grain-Scourers, of which the following is a specification.

This invention relates to that class of grainscourers which consist, essentially, of a perforated scouring-drum having an internal airsupply, a perforated scouring-case su rround ing the scouring-drum, and a tight inclosing case or air-chamber surrounding the scouring-case.

One of the objects of this invention is to subject the grain while being scoured to a more copious air-current, so that the grain is ventilated more thoroughly and the detached dust and other particles are carried oif more rapidly.

Another object of this invention is to provide a relief pocket or pockets in the side of the scouring-case which permits the grain to temporarily free itself from the propelling de- Vices, whereby the kernels of grain are permitted to change their position and all parts of the same are enabled to be thoroughly scoured.

My invention has the further object to arrange the ribs on the scouring-plates of the drum in such manner that the incoming grain is carried quickly away from the grain-inlet, so that the latter is prevented from becoming clogged,while the further forward movement of the grain is retarded, so as to subject the grain to a thorough scouring action.

In the accompanying drawings, consisting of two sheet-s, Figure l is a vertical longitudinal section of my improved grainscourer. Fig. 2 is a side view of the scouring-drum. Figs. 3 and et are vertical transverse sections in lines 3 3 and t 4l, Fig. l, respectively.

Like letters of reference refer to like parts in the several figures.

A represents the stationary main frame of the machine, and B theimperforate case which incloses the scouring device and which is provided in its front and rear walls or ends b b with circular openings b2 b3 and in its bottom with an open hopper bl.

C represents the horizontal driving-shaft,

which extends centrally th rough the inclosing case and its openings b2 b3 and which is journaled in bearings on the main frame.

D represents a scouring-drum having circular spider or open heads d d on its front and rear ends, which are mounted on the shaft. The front drum-head consists, essentially, of an outer ring @,which tits in the front opening b2 of the inclosing case and turns therein, arms e, connecting the ring with a hub e2 on the shaft, and an annular or cylindrical flange e3, extending inwardly from the ring e. The rear head consists of an outer ring f, which is separated from the rear wall of the inclosing case by an intervening space, arms fl, connecting the ring with a hub f2 on the shaft, an annular or cylindrical flange f3, extending inwardly from the rear ring, and a cylindrical tube f4, extending outwardly from the rear ring across the space between the latter and the rear wall and turning snugly in the rear opening b3 of said wall.

g represents the cylindrical screen or clothing of the scouring-drum, which preferably consists of Woven wire and is secured at its front and rear ends to the iianges of the front and rear drum-heads. The air is admitted into theinterior of the scouring-drum through both of its open heads and is driven outwardly through the screen by fan blades or wings h, which are engaged lengthwise on the inner side of the screen and secured with their ends to the rings of the front and rear drum-heads.

I represents a perforated scouring-case which surrounds the scouring-drum and is separated from the latter by an intervening space or chamber, through which the wheat or grain to be scoured passes. The main por tion of this scouring-case has the form of a plain cylinder and is secured with its ends to the inner sides of the front and rear walls of the inclosing case. The scouring-case is provided with a laterally-projecting relief pocket or chamber i', into which the grain is thrown by the scouring-drum, and the position of the grain with reference to the scouring-surfaces is changed so as to scour all sides thereof. This pocket is preferably arranged in the upper part of the scouring- IOO case, along the whole length thereof, and is formed by offsetting or defiecting the upper part of the scouring-case. The scouring-case and its relief-pocket are made of woven wire or other perforated material.

K represents a feed-spout whereby the grain to be scoured is fed into'the space between the scouring drum and'case and which extends through the top ot` the inclosing case and the relief-pocket at the front end thereof.

L represents a discharge-spout whereby the scoured grain is carried away and which is connected with the rear end of the scouring-case below the space in rear of the drum and extends laterally.

The grain delivered by the feed-spout into the head end of the scouring-space passes lengthwise through this space and then discharges from the tail end thereof through the delivery-spout. In its passage through the scouring-space the grain is carried around the scouring-case by the scouring-drum, and the dust particles and other loose particles are detached from the grain by the attrition of the kernels of grain against each other and against the screen-surfaces of the scouring drum and case. In the normal operation of the machine the scouring-space is filled with grain, and the kernels of grain maintain the same position while being carried around by the scouring-drum. Vhen the kernels of grain arrive opposite the reliefpocket, they are thrown by the drum during each rotation of the latter into the pocket and are temporarily relieved from the rotary carrying action of the drum,and then the kernels are again caught by the drum and carried around another turn in the scouringcase. As the`kernels of grain are thrown into the pocket they rebound more or less from one side of the pocket to the other, whereby the ends of the kernels are scoured and polished, and the kernels are turned and mixed, so that all of the kernels and all sides of each kernel are brought into contact with the scouring-surfaces before they are ldischarged from the scouring-space. The kernels also have an opportunity to separate in this pocket from each other to a greater eX- tent than while they are under control of the drum, whereby the air-current is enabled to pick up and remove the detached impurities more readily and completely while the kernels are moving about in the pocket.

M represents the case of an airexhaust fan whereby the impurities which are detached from the grain during the scouring operation are separated from the grain and carried off. This fan-case is mounted on top of the main frame and has its eyes connected by aireXhaust pipes or trunks m m with the top of the space surrounding the scouring-case. The inlet ends of these trunks are preferably arranged on opposite sides of the relief-pocket of the scouringcase, as shown in Fig 4, and out of line lengthwise, as shown in Fig. l. The suction produced by the fan causes a current of air to pass from the open hopper b4 upwardly through the space around the scou r ing-case to the fan and carry away any light particles which pass through the scouringcase. The air en tering the ends of the scouring-drum is forced by the blades of the latter through the grain in the scouring-space and into the space surrounding the scouringcase, whereby the light particles are carried off to the fan as soon as they are detached from the grain. By providing an air-inlet at both ends of the scouring-drum an abundant air-supply is obtained and the separation of the dust from the grain is promoted. By arranging the inlets of the air-trunks or airpipes m m' one behind the other and adjacent to the relief-pocket the air'suction is distributed and operates upon the grain while the same is in a loosened condition, thereby enabling the dust to be easilyseparated therefrom. The discharge-spout L of the scour; ing-space empties into a '[inal air-trunk n, which connects with one of the eyes of the fan and which removes the remaining light. impurities from the grain.

O and P represent two sets of scouring plates or bars which are arranged lengthwise on the outer side of the drum. -Both sets of plates serve to scour the grain during its passage from the feed-spout to the dischargespout, but the plat-es O have the additional function of feeding or propelling the grain rearwardly from the feed-spout and clear the outlet thereof, while the plates P have the additional function of retarding the rearward movement of the grain after passing the ontlet, so as to subject the grain to a thorough scouring action. The scouring-plates O and P alternate with each other, and each plate is secured at its front end to the flange of the front drum-head and at its rear end to the flange of the rear drum-head. Each of the plates O is provided at its front end, below the feed-spout K, with a short series of oblique propelling-ribs o and in rear of the feed-spout with a long series of non-propelling-ribs o2, which extend circumferentially with reference to the drum. The oblique ribs 0' cause the grain delivered upon the drum to be carried quickly away from-underneath the feed-spout, so as to avoid clogging the grain-inlet, and the circumferential ribs o2 agitate the grain and aid in scouring the saine. The scouring-plates P are each provided with a series of oblique ribs p, which are arranged lengthwise of the plate and trend slightly backward in the direction for counteracting or retarding the movement of grain from the front to the rear end of the scouringspace,thereby always retaining the scouring-space full of grain and insuring thorough scouring of the grain before it is discharged.

The grain is delivered by the feed-spout directly on top of the scouring-drum, so that the grain is immediately set in motion and clogging of the machine at the inletis avoided. The rear or discharge end of the scouring- IOO IIO

space is open fully around the entire drum, thereby providing a free discharge for the grain and preventing clogging of the machine or breaking of the grain at the outlet.

The cylindrical portion of the annular flange of the front head, which is arranged below the feed-spout, is imperforate and perfectly plain or solid, as shown at q, Figs. l and 2, and the screen of the scouring-drum extends rearwardly from this plain portion, thereby avoiding undue wear upon the front end of the drum screen, which otherwise would take place if this screen extended underneath the feed-spout. The grain issuing from the spout strikes the plain surface q of the front head and is immediately carried rearwardly and distributed over the entire front end of the scouring-surfaces by the Oblique ribs o of the scouring-plates O.

I claim as my inventionl. The combination with the inclosing case provided in its front and rear walls with circular openings, of a rotary, perforated scouring-dru m provided at opposite ends with open `heads which communicate with said openings, a stationary, perforated scouring-case surrounding said scouring-drum and secured to the inclosing case, a feed-spout which opens into the front portion of said scouringcase, a discharge-spout connected with the y rear end thereof, and a suction-spout which opens into the space between the perforated scouringdrum and the inclosing case,where by air is drawn into the scouring drum through both ends thereof and through the perforated wall of the scouring-drum into the space between the latter and the scouringcase, and thence into the suction-spout, substantially as set forth.

2. The combination with the inclosing case provided in its front and rear walls with circular openings, ofa perforated scouring-drum provided at its front end with an open circular head which communicates with the opening of said frontwall and at its rear end with an open head which is separated from said rear wall by an intervening space, a cylindrical tube extending from said rear head across said space and turning in the opening of said rear wall, a stationary perforated scouring case surrounding said scouring drum and secured to the inclosing case,a feedspout which opens into the front portion of said scouring-case, a discharge-spout connected with the scouring-case below said space in rear of the drum, and a suction-spout which communicates with the space between the perforated scouring-drum and the inclosing case at a point located betweeny the front and rear ends of said case, substantially as set forth.

3. The combination with the rotary scouring-drum, of a surrounding stationary scouring-case composed of a plain cylindrical perforated main portion and an outwardly-projecting perforated reliefpocket which extends along the upper portion of the scouring-case from the Vfront to the rear end thereof, an imperforate case inclosing the perforated scouring-case, and a suction-spout connected with said imperforate case, substantially as set forth.

4. The combination with the horizontal scouring-drum, of the perforated cylindrical scouring-case surrounding the drum and provided on its upper side with a pocket which extends lengthwise of the case, a feed-spout opening into said pocket over the front end of the drum, and a discharge-spout connected with the case at the rear end of thedrum, substantially as set fort-l1.

5. The combination with the inclosing case provided in its front and rear walls with circular openings, of a perforated scouringdrum provided at its front end with an open circular head which turns in the opening of said front wall and at its rear end with an open head which is separated from said rear wall by an intervening space, said drum being provided with a longitudinal, feeding scouringplate provided below the feed-spout with a series of oblique propellingribs and in rear of said spout with a series of non-propelling circumferential ribs, and with a longitudinal rerarding scouring-plate provided with a series of oblique ribs which trend backwardly, a cylindrical tube extending across the space in rear of the drum and connected at its inner end to said rear head and turning with its outer end in the opening of said rear wall, a perforated scouring-case inclosing said drum and connected with said inclosing case, a feed-spout connected with the top of the scouring-case over the front end of the sco uringdrum,a discharge-spout connectw ed with the scouring-case below the space in rear of the drum, and a suction-spout which opens into the space between the scouringdrum and the scouriiigcase, substantially as set forth.

Witness my hand this 22d day of May, 1899.

CHARLES S. RIDER.

Witnesses:

FRED. W. THOMAS, WALTON C. BARBEAN.

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